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Research on Properties of the Pulse in UWB System

In recent years, Ultra-Wide Band communication system has been widely discussed around the academic community, research institute and famous corporations. UWB systems transfer the information by using Ultra-short pulses in time domain, whic....
The Study on EZRP to Reduce Power Consumption

As a temporary distributed network, Ad hoc is formed by a collection of wireless mobile nodes without any existing network infrastructure. In this condition, due to the finite of wireless communication range, nodes which can....
Research of Ad Hoc Networks Management Protocol Based on ANMP

Ad Hoc networks are multi-hop and no-centre networks, which are composed of a group of wireless mobile nodes or terminals cooperating with other nodes. The task of Ad Hoc network management includes network planning, initialization, configu....
Research on Clustering Protocol and MAC Protocol in Wireless Sensor Network

Wireless sensor network is a kind of new network technology which based on collaborative efforts of multiple self-organized dynamic nodes, under lots of extremely constraints namely limited energy, abominable environment which are deployed,....
Research on Layered Protocol for Ad Hoc Networks Based on the Physical Hierarchical Structure

Along with the rapid development of communication technology, wireless mobileselforganizing (AdHoc) networksareheadingtowardsthedirectionofbecominglarger,and constructing more efficient large scale Ad Hoc networks has become one of theimpor....
Research on Synchronization and Related Technology of IEEE802.16e OFDMA System

This paper studies IEEE802.16e OFDMA system synchronization and related technology. According to the characteristics related to the preamble in IEEE 802.16e OFDMA system, an improved method about the maximum peak....
Research on Load Balance Routing Protocols of Wireless Mesh Network

Wireless Mesh network is a high bit-rate and high-capability network, it is a new distributed network asthe last mileresolution, and it can be considered as a simple version of Ad hoc network. For recent years, WLAN has developed well, but....
Research on Adaptive Modulation Techniques in OFDM System

Reliable data transmission with high-speed is the aim of wireless communication OFDM with the advantage of high spectrum efficiency and easy realization, can strongly combat multi-path delay and fading, and is remarkable in recent years. In....
Performance Analysis and Optimization of MAC Protocol in Wireless Sensor Networks

Wireless Sensor Network (WSN) is a self-organized wireless communication network which is constituted by a large number of low-expense micro sensor nodes that are deployed in application area. The lives of the sensor nodes always depend on....
Research on Synchronization Technology and FPGA Design for DS-UWB

Ultra-wide band(UWB) is a new technology for short-range wireless communication which has recently received a significant amount of attention from academic researchers as well as from the industry.It uses the very short pulses to transmit m....
Research of Spectrum Allocation Algorithm in Cognitive Radio

With the development of radio communication technology, spectrum resource has been more widely employed, and the scarceness of wireless spectrum hampers the continual development of wireless communication. Using the licensed spectrum in....
The Research on Routing Protocol in Ad Hoc Network

Mobile Wireless Ad Hoc Network (MANET) is a self-organized multi-hop wireless network consisting of mobile nodes without any centralized administration. MANET is quite suitable to be used in some special situation such as battlefield, disas....
Research on Power Control Algorithm in Cognitive Radio

As the newest development of the wireless communications, cognitive radio is a landmark. Its concepts and development are introduced at the beginning of this paper. The purpose and significance of research are also shown. Then, the system s....
On the Synchronization Technology in the CDMA Satellite Communications

With the development of satellite communications technology, more and more attention is paid on the CDMA small low-orbit satellite communications system. Frequency offset of receiving signal caused by doopler effect in the satellite channel....
Research on Packet Scheduling Algorithm in New Generation Mobile Communication System

In recent years, mobile communication is developing dramatically and the number of mobile users becomes much larger with increased requirement of high-speed data transmission. So research on the new generation mobile communication technolog....
Research on Atmospheric Combined Attenuation Effect on Millimeter Wave System

In this paper, the constitutions and characteristics of millimeter wave communication system are expatiated. The atmosphere factors influence on millimeter wave system are analyzed and discussed. The absorption of oxygen and vapour effect o....
An Improved MDSR Routing Protocol

Mobile Ad hoc network is a multi-hop and temporally distributed network which isformed by a collection of wireless mobile nodes without any existing networkinfrastructure. It is featured with acentric distribution, dynamic topology, multi-h....
Research on Capacity and Routing Protocol of Multi-Channel Ad Hoc Networks

The limited network capacity has become a bottleneck problem in the applicationof large-scale Ad Hoc networks. Multi-channel technology is an effective approach thatcan boost network capacity due to permitting multiple pairs of nodes to con....
Research on MIMO Multiple-antenna Technology

The third generation mobile communication (3G) technologies are still not applied into our life. However, the new generation wireless communication technologies are emerging and booming, whose target of providing ubiquitous, high quality, a....
Power Control of the WiMAX System

WiMAX (World Interoperability for Microwave Access), based on the IEEE 802.16 standard suite, adopts the technologies of OFDMA (Orthogonal Frequency Division Multiple Access) and MIMO (Multiple Input Multiple Output), and plays an important....
Development and Application of IPTV-based Digital Learning Environment in Campus

As a rising medium, Internet protocol television(IPTV) has brought new impetus and new way of thinking because of its strong developing power and the advantage of its interaction. More and more people have already paid attention to the IPTV....
Study on Timing Recovery in Wireless Communication

Wireless channel fading results in inter-symbol interference which occurs in the received signal. Because ISI is an important factor that worsens the performance of receiver, T-tap equalizer is commonly used in wireless receiver. T-tap equa....
Development of Multi-Service Laser Communication Machine in Atmosphere

In recent years, the requirement of broadband multimedia service promotes the development of the communication network; light wave is considered as the best carrier, which has been proved by the development of optical communication. Compare....
The Research on EPON Upstream Access Bandwidth Allocation Algorithm

Along with the rapid development of communication technology, the requirements of users for bandwidth become higher and higher. The Ethernet Passive Optical Network (Ethernet PON) based on mature Ethernet technology uses point-to-multipoint....
Research and Application of Data Aggregation for Wireless Sensor Networks

Advanced in Microelectronics technology, computer technology and wireless communications, promoted the low power loss multi-purpose sensor\....
The Hardware Design and Verification of OOB Mode(A) Transport System in CableCARD

With the rapidly development of communication and information technology, digital TV has become the focus of the whole world, as the industry innovation and huge market brought by it. It contains three key technologies called Set-top Box, M....
The Research on the Key Technology and the Application of the VoIP-based Campus Network Videophone Co

With the rapid development and popularization of the computer network and the technology of digital communication, internet which bases on TCP/IP has more and more influence on people....
Study and Realization for Video Conferencing Systems Basing on H323

With the development of multi-media computer technology and the communication technology, people are not satisfied with simple voice and characters communication, hoping to incorporate multi-media communication which assembles pronunciation....
Construction Algorithm of Virtual Backbone in Mobile Ad Hoc Network

Mobile ad hoc network—a novel decentralized self-organized network, is comprised of wireless terminals situated randomly without any pre-deployed infrastructure. It receives more and more attention from researchers since it can be applied....
Designing Multipath-Based QoS-Aware Segment-by-Segment Routing Protocols in Mobile Ad Hoc Networks

The Mobile Ad-hoc NETworks (MANETs) are an autonomous infrastructureless network system and a hot research topic in the communication field. However, it is an important and unclear problem to design an efficient routing protocol since the n....

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